Lock



Nov. 5, 1968 A. HASENBEIN 3,408,840

Loox

Filed March 22, 1966 2 Sheets-Sheet l E FIG. 2.

@4 /ummnnuuw 60 55 62 56 /OQ He., @0 8 l EDWARD D. OBR/AN A Trae/75V A.HASENBEIN Nov. 5, 1968 LOCK 2 Sheets-Sheet 2 Filed March 22, 1966/Nz/EA/rof? ALFRED HAsE/vBE//v 3,408,840 LOCK Alfred Hasenbein, Anaheim,Calif., assignor to Aljo Enterprises, Inc., Whittier, Calif., acorporation of California Filed Mar. 22, 1966, Ser. No. 536,398 6Claims. (Cl. 70-363) ABSTRACT OF THE DISCLOSURE An axial tumbler lockhaving a barrel rotatably mounted within a housing is disclosed. Thebarrel is provided with a plurality of tumbler slots, each of whichcarries a tumbler having a tumbler pin extending to the face of thebarrel. A recessed bore adjacent to the front of the housing is providedin the housing around the barrel adjacent to the tumbler pins. This lockis used with a key having a locking lug which is adapted to iit throughone of the latter slots into the bore as the tumblers are moved to aposition in which the barrel can be rotated and to rotate within the-bore as the barrel is rotated within the housing. In at least oneposition of the barrel when the key is inserted the barrel can bewithdrawn from its housing.

This invention is directed to a lock, and particularly to a key operatedlock having axial tumblers therein, the lock being particularly designedto inhibit being opened without the proper key.

The purpose of a lock is to prevent access to certain areas by personswho are not authorized to have access to these areas. Relatively simplelocks are provided where access by other means than through the lockedaperture is easy, and complex locks are provided in those situationswhere valuables are stored in a place where access by other openings isdifficult. A particularly ditiicult situation is provided by coincontrolled machines. In this case it is necessary to'inexpensively, yetsecurely lock the coin boxes of the coin controlled machines so thataccess by unauthorized persons is inhibited. However, since in manycases one man has control over and/or collects the money from aplurality of such machines, it is desirable that any group be openablewith a single key. Furthermore, ordinary locks which must be rekeyed bya locksmith are not considered satisfactory, for it is desirable toprevent the locksmith from having access to the key which will open aplurality of such coin boxes and it is desirable to often change the keyto aid in preventing access by one who may have a suitable key foropening such coin boxes. Furthermore, it is desirable to provide a lockwhich cannot be easily picked. With these requirements in mind the axialtumbler lock has been developed. However, present axial tumbler locksare susceptible to opening by a person other than the one in charge ofthe coin boxes. Accordingly, there is great demand for an improved axialtumbler lock which is designed vso that it cannot be picked by any ofthe known quick opening methods.

Accordingly, it is an object of this invention to provide an inexpensivelock and key combination which can be set by the owner of the lock andof which picking is inhibited.

It is a further object of this invention to provide a secure lock andkey combination which have axial tumblers therein, the arrangement ofthe axial tumblers determining the shape of the proper key for openingthe lock, which tumblers are partially visible from the exterior of thelock.

It is a further object of this invention to provide a lock which has aremovable barrel, which barrel can be removed by unlocking of the lockand withdrawal of the 3,408,840 Patented Nov. 5, 1968 barrel out of thefront of the lock housing, which barrel is tirmly secured in place whenthe lock is in the locked position.

It is a further object of this invention to provide an axial tumblerlock wherein each of the tumblers has two positions and there are twosizes of tumblers so that four positioning possibilities exist for eachtumbler location, and there are a plurality of such tumblers in thelock.

Other objects and advantages of this invention will become apparent froma study of the following portion of this specification, the claims andthe attached drawings in which:

FIG. l is a front elevational view of the lock of this invention;

FIG. 2 is a side elevational view of the lock of FIG. 1 showing the locksupporting structure in section;

FIG. 3 is an enlarged sectional View taken along the line 3 3 of FIG. 1,showing the key, partly broken away, in association therewith;

FIG. 4 is a section similar to FIG. 3 taken along the line 4 4 of FIG.1;

FIG. 5 is a side elevational view of the key used in association withthe lock of this invention;

FIG. 6 is a section taken generally along the line 6 6 of FIG. 3;

FIG. 7 is a section taken-along the line 7 7 of FIG. 3;

FIG. 8 is a section taken along the line 8 8 0f FIG. 3;

FIG. 9 is an enlarged partial section showing the key inserted in thelock and showing a tumbler depressed into the unlocked position; and

FIG, l0 is an exploded isometric view, partially in section, showing therelationship between the key, the lock barrel and the lock housing.

As an aid to understanding this invention it can be stated inessentially summary form that it is directed to a lock. The lock is ofthe axial tumbler type wherein there are a plurality of the axialtumblers located in a rotatable lock barrel. Each of the tumblers hasone operative notch which must be aligned with a locking ring in thelock body to permit rotation of the barrel. Each of the tumblers has twoof such notches, one of which is selected to be operative. Preferably,there are two types of tumblers with diierently positioned notches, sothat four selected positions of tumbler depression for unlocking areavailable. A key iinger can be properly positioned to depress thetumbler to the unlocking point. Retaining lugs are provided on .the lockbarrel, which retaining lugs lock behind the locking rings until thebarrel is unlocked and rotated to a position wherein the retaining lugsare released. A key is provided with a finger which permits the key tobe inserted and withdrawn only when the lock is either in a lockedposition or is in the barrel withdrawal position. Thus, the tumblersmust be in locked position when the key is withdrawn. Furthermore, thelock barrel has a solid inner core. This prevents any portion of thetumblers which can indicate the keying arrangement from being seen from.the outside. Furthermore, the solid inner core retains the entirebarrel together as a one piece structure while it is installed in thelock housing to prevent a portion of the lock from being withdrawn.

This invention will be understood in greater detail by reference to thefollowing portion of this specication, -wherein the drawings aredescribed. Referring now to the drawings, the lock of this invention isgenerally indicated at 10 and the key particularly designed to cooperatewith the lock 10 for the unlocking and locking thereof is generallyindicated at 12. First describing the key 12, its basic structuralelement is a core 14. Core 14 is slotted at the outer end, and key tab16 is secured in the slot by means of pin 18. Core 14 proceeds from asmall diameter section 20, to a medium diameter 22 and thence to a largediameter 24. Thus, core 14 comprises a stepped shaft. Collar 26 issecured upon diameter 20 and engages against the shoulder provided bydiameter 22. Collar 26 is slotted part way through so as to receive aportion of the key tab 16. Leaf spring 28 is secured within the notch incollar 26 beneath key tab 16. Lock collar 30 has `an interior diameterthroughout most of its length equal to the external diameter of largediameter 24. However, it has a ring 32 projecting inwardly part of thedistance toward the surface of diameter 22. Ring 32 is almost completelycircumferential, and only has a small axial notch. Shield col-lar 34 issecured to the outer surface of large diameter 24. Large diameter 24 hasaxial slots 36 spaced around the circumference thereof. A plurality ofthese slots are provided and they have a slot depth equal to theexterior diameter of medium diameter 22. Thus, slots 36 extend into thekey 12 lfrom the face 40' of diameter 24. Shield collar 34 extendsoutwardly past face 40 so as to protect key fingers 42 which arepositioned in the slots 36. In the embodiment disclosed, there are eightsuch slots and eight such key lingers. Each of the key fingers has aplurality of notches 44 therein. The notches 44 are of such dimensionthat the ring 32 fits reasonably firmly therein. Lock collar 30 has anotch 46 therein which accepts the end of leaf spring 28. Thus, lockcollar 30 is prevented from rotation so long as spring 28 is in notch46. In addition to the axial slots 36, large diameter 24 and shieldcollar 34 contain slots to accept the keying end 48 of key tab 16. Thekeying end 48 has a guide finger 50 and a locking lug S2.

-It is clear from this description of construction that the key 12 is anadjustable key which can be set to a particular arrangement of 4keyingfinger 42 by the owner of the lock. This is accomplished by lifting ofthe spring 28 out of the notch 46 and rotation of the collar 30. Whenthe opening in ring 32 is aligned `with any one particular lkey finger42 the key 4finger 42 can be adjusted until the appropriate notch 44therein is in alignment with ring 32. Thereupon the opening in ring 32is turned to the next key finger 42. When all of the key fingers 42 arereset to the desired position, slot collar 30 is returned to theposition shown in FIG. wherein the spring 28 enters notch 46 and retainscollar 30 in position. Neither collars 26 or 34 are rotatable upon core14, but are fixed with respect thereto by means of the slots which areengaged by tab 16, and any other convenient securing means.

Turning now to the description of the lock 10, for which key 12 isdesigned, the lock 10 comprises a housing 54. The housing 54,particularly see FIG. 2, is adapted to be secured in a panel 56 withrespect to which a locking function is desired. Housing 54 has flats 58thereon, which appropriately fit the hole within panel S6 to preventrotation of housing 54. The exterior of housing 54 carries bezel 60which is of larger diameter than the hole in the panel so that nut 62engaging upon the threaded rear exterior of housing 54 can lock housing54 with respect to panel 56. Rear shaft 64 is rotated by rotation oflock barrel 66 within housing 54. A suitable locking member l68 may berotated by rotation of shaft 64 to perform the locking and unlockingoperation. Of course, other means can be actuated by rotation of rearshaft 64, for locking of an appropriate structure.

Considering first the interior of housing S4, lock barrel 66 mountswithin bore 70 in the interior of housing 54. Bore 70 is primarilycomprised of cylindrical surfaces and shoulders. Bore 70 comprisescylindrical main bore 72 which has 4annular lock ring 74 extendinginwardly therefrom. Lock ring 74 has a plurality of axial slotstherethrough. Tumbler slots 76 are suitably arranged around the ring 74.In the preferred embodiment shown, there are eight tumblers in the lock,as exemplified by the eight key fingers 42 and thus there are eight ofthe tumbler slots 76. Furthermore, there are preferably twodiametrically opposed locking lug slots 78. Toward the l bezel 60 frommain `bore 72, recess bore 80 is provided.

Recess bore 80 is of larger diameter than main bore 72 and they join atshoulder 82. Toward the front of recess bore 80, annular groove 84 isprovided. Annular groove is open to the face 86 of bezel 60` by lugslots 88, 90 and 92.

Rearward of main bore 72 are bore 94 `and opening 96. The opening 96 isof suicient size to permit shaft 64 to extend therethrough. Bore 94joins main bore 72 with shoulder 98 and bore 94 joins opening 96 withshoulder 100.

Now considering the construction of lock barrel 66, it is seen in theseveral figures to be made up of several parts which are firmly securedtogether. Toward the front of the barrel 66 is the tumbler retainer 102.Immediately behind the tumbler retainer is spring retainer 104. To therear of spring retainer 104 is rear shaft 64. Pin 106 has a head 108which respectively fit into an appropriate center hole and head recessin tumbler retainer 102. To the rear of pin 106 and secured thereto isblade 110. Blade 110 is secured as by brazing to pin 106. It extendsforward past the back end of pin 106, along the sides thereof and tsinto slot 112 across tumbler retainer 102. This construction preventsrearward motion of the pin 106-blade 110 combination by reason of head108 and prevents forward motion and rotative motion 0f the combinationby means of blade 110 in slot 112. Blade 110 extends rearwardly and hasa hole 114 therein. As is best seen in FIGS. 3 and 4, pin 116 extendsthrough hole 114 in blade 110 and into lholes 118 in rear shaft 64. Snapring in groove 122 around holes 118 prevents pin 116 from accidentlydislodging. Furthermore, blade 110 fits into slot 124 in rear shaft 64so that shaft 64 rotates with tumbler retainer 102. Shaft 64 has anenlarged head 126 which rotates against shoulder 100 to take up rearwardthrust of the shaft 64 in the locking operation.

Tumbler retainer 102 has a circular groove 128 of such dimension as toaccept shield collar 34. It has a slot 130 intersecting groove 128 andextending radially inwardly and outwardly there-from. Slot 130 is ofsuch size as to accept guide finger 50 and the portion of keying end 48extending exteriorly of shield collar 34. This structure is best shownin FIG. 3. By this construction, key 12 can enter tumbler retainer 102in only one rotative position of the key with respect to the tumblerretainer. A plurality of tumblers 132 are positioned in slots 134 intumbler retainer 102. The forward end or tumblers 132 have forwardlyextending tumbler pins 136 which are positioned in tumbler pin slots 138which extend to the face of tumbler retainer 102. The tumbler pin slots138 are inwardly positioned from groove 128. The tumbler pin slots 138and tumbler pins 136 are appropriately positioned so as to be actnatableby key fingers 42 when the key is inserted into tumbler retainer 102with its keying end 48 in slot 130. Tumbler retainer 102 extendsrearwardly to shoulder 140 which is positioned just in front of oragainst lock ring 74.

Tumblers 132, in addition to the Iforwardly extending tumbler pins 136,have relatively wide central blades positioned in slots 134 which extendall the Way down to pin 106. Each of the tumbler blades 132 has anexterior lock notch 142 at a particular distance from the front end ofthe tumbler pin 136. Furthermore, each tumbler 132 can have an inwardlydirected lock notch 144, which is ineffective, and which is positionedat a different distance from the end of tumbler pin 136 than the notches142. As is shown in FIG. 4, each of the lock notches is spaced at adifferent distance from the end of lock pin 136. As becomes laterapparent, the tumblers 132 may be changed into different tumbler slots134, and may be reversed so that the lock notches 144 become effectiveso as to produce a large number of available unlocking combinations. Therear end of tumblers 134 are bifurcated so as to produce legs 146 and148. These legs provide guidance and provide a space for a springtherebetween.

Referring particularly -to FIGS. 3, 4 and 7, the spring retainer hasinside and outside slots 150 and 152, respectively, to accept legs 148and 146. Between these slots are spring retainer holes 154. Springs 156are positioned in these holes to engage tumblers 136 between the legs146 and 148 thereof and urge them to the right as is seen in FIG. 4. Thebottoms of spring retainer holes 154 are closed by washer 158 which issecured to the rear end of spring -retainer 104.

In addition to the spring retaining function of spring retainer 104, italso has a function of retaining the entire lock barrel 66 in placewithin housing 54. As was previously described, lug slot 78 is providedin lock ring 74. Lug 160 is provided on the exterior of spring retainer104. Normally lug 160 has its front end engaging on the rear of lockring 74. However, when the barrel 66 is turned to the appropriateangular position, as is defined by slot 90 on the face of the lock, seeFIG. 1, lug 160 is aligned with lug slot 78 so that the entire structurecan be pulled forwardly out of the housing 54. Preferably there are twoor more of lugs 160 and an equal number of appropriately spaced lugsslots 78.

As is apparent from the previous description of the construction, therotation of lock bar-rel 66 within housing 54 is arranged to cause thelocking and unlocking operation of the structure with which the lock isassociated. This rotation is allowed by alignment of lock notches 142with lock ring 74. The key 12 can be inserted in the lock 10 only whenits locking lug 52 enters one of the lug slots 88, 90 or 92, seen inFIG. 1. The lock is normally left in locked condition with the slot 130in alignment with either lug slot 88 or 92. In this position, thesprings 156 thrust tumblers 132 to the right so that the tumbler bladesoccupy the tumbler slot 76 in lock ring 74. Thus, each of the tumblersprevents rotation of barrel 66 within housing 54. In this position, thetumblers 132 are urged to the right until the major portion of theirwidth stops at the right end of the slots 134. In this position, theends of tumbler pins 136 are flush with the front face of the lockbarrel. When the key is inserted, shield collar 34 enters into groove128 and the guide finger 50 enters into slot 130. At the same time, theend of key fingers 42 engages upon the ends of tumbler pins 136 tothrust them to the left. When the key is fully inserted, with the face40 of core 14 of the key against the face of the barrel, the tumblers132 are thrust to the left. Providing the key fingers 42 are in thecorrect notches 44, tumbler notches 142 line up with lock ring 74 sothat the barrel can be rotated within the housing. Thus, slot 130 inassociation with guide finger 50 permits the key to be placed into thelock barrel in only one relatively rotative position.

Furthermore, locking lug 52 in association with lug slots 88, 90 and 92permits the key to be withdrawn only in three relative positions of thebarrel with respect to the housing. Two of these positions,corresponding to slots 88 and 92 are locked positions and slot 90corresponds to a position in which lugs 160 line up with lug slots 78.In this position, the entire barrel of the lock can be withdrawn fromthe housing, providing the locking member 68 or other related lockingstructure is first disconnected from shaft 64.

Upon withdrawal, the tumblers in the barrel can be changed to a newarrangement. This is managed by the removal of snap ring 120 and removalof pin 116 which permits rear shaft 164 to be removed. Spring retainer104 can then be removed. In this position, the various tumblers 132 canbe interchanged so that a different pattern of lock notches 142 ispresented to lock ring 74. At the same time key 12 is adjusted to thenew pattern of turnblers, as has been previously described. Thereupon,upon reassembly of the lock barrel, it can be inserted with the lockinglug'52 entering through lug slot 90. Thereupon, turning of the key sothat it is withdrawn either through slot 88 or slot 92 locks the barrelin the housing both axially and rotatively. The lock is again ready forlocking and unlocking operations with a new combination of tumblers.

It is apparent from the foregoing description of the construction andoperation that the lock of this invention has constructional designfeatures which make a secure lock. In view of the particular structurewhich makes the lock quite secure against picking, the following itemsare noted. The key itself is provided with a shield collar 34. Thisprotects the key fingers 42 so that they are protected from beingdamaged. Since they are protected, the whole llock can be built to closetolerances so that accurate operation of the tumblers can be required toopen the lock.

The solid inner core which is represented by pin 106 is strong andprotects the notches of tumblers 132 from inspection Iand vie-w.Furthermore, the enlarged head of the tumbler retainer 102 bearingagainst shoulder 82 prevents feelers from being inserted between thelock barrel and the housing from reaching the notches of tumblers 132.Thus, there is no access to the tumblers 132 except from the front. Itis clear that tumbler retainer 102 and rear shaft 64 are firmly securedtogether. This prevents the front end of the lock from being popped out,for the entire structure is held in by retaining lugs 160, rather thanlight snap rings or small undercuts.

Another feature which protects the key fingers 42 is the fact that thekey can only be placed into the barrel by alignment of guide finger 50in slot 130. In this way the key is prevented from going in the wrongway which could cause bending of key fingers.

This lock employs a single key which is used both for locking andunlocking of the barrel with respect to the housing and which permitsthe `barrel to tbe turned to the barrel withdrawal position. Thus, thekey can only `be pulled out in the locked or withdraw position, and inthese positions the key tumblers ,are forward. If key could `bewithdrawn with the tumblers in the unlocked position, with the locknotches 142 engaged over lock ring 74, the ends of tumbler pins 136would be depressed below the surface to permit measuring of them. Thismeasurement in turn would result in the proper key combination to unlockthe lock. In the instant lock, however, whenever the key is removed thetumblers are thrust forward to lie fiush at the front face. Furthermore,this provides tumblers which are visible and return of the tumblers tothe front, locked, position can easily be noted. This prevents theplacement of viscous materials within the lock which hold the tumblersin the unlocked position after the key has been used. Thus, it isapparent that the instant lock is virtually impossible to open Withoutthe proper key or without virtual destruction of the lock.

This invention having been described in its preferred embodiment, it isclear that it is susceptible to numerous modifications and changeswithin the skill of those versed in the art and without the exercise ofthe inventive faculty. Accordingly, the scope of this invention isdefined by the scope of the following claims.

I claim:

1. A lock, said lock comprising a housing and a barrel located withinsaid housing, said barrel being rotatively lockable with respect to saidhousing, said barrel comprising a tumbler retainer and a rear shaft,said rear shaft being adapted to be rotatable with 4respect to saidhousing so as to control the locking of relative members, said tumblerretainer having axial tumbler slots therein, axial tumblers in saidtumbler slots, said tumbler retainer having a solid center, said solidcenter being secured to said rear shaft so as to axially and rotativelyrestrain said rear shaft with respect to said tumbler retainer,

said solid center comprising a pin having a head, said head and said pinbeing engaged with said tumbler retainer, a blade secured to said pin,said blade extending rearwardly into said rear shaft and being securedwith respect to said rear shaft,

tumbler retainer and said rear shaft so that said` tumbler retainer andsaid rear shaft are rotatably restrained with respect to each other, aremovable pin extending through said blade into said rear shaft so as toaxially restrain rear shaft with respect to said headed pin, i

said tumbler retainer having an enlarged head thereon and said housinghaving an enlarged bore therein, said enlarged head on said tumblerretainer entering said enlarged bore in said housing so as to preventdirect access to the sides of said tumblers within said tumblerretainer,

Said tumblers in said tumbler retainer each having a substantiallycentral tumbler pin extending forwardly therefrom, said tumblers beingurged toward the face of said tumber retainer, a stop on said tumblerretainer for each of said tumblers, said tumbler pins extendingsubstantially to the face of said tumbler retainer when said tumblersare against said stop.

2. A lock, said lock comprising a housing and a barrel located withinsaid housing, said barrel being rotatively lockable with respect to saidhousing, said barrel comprising a tumbler retainer and a rear shaft,said rear shaft ybeing adapted to be rotatable with respect to saidhousing so as to control the locking of relative members, said tumblerretainer having axial tumbler slots therein, axial tumblers in saidtumbler slots, said tumbler retainer having a solid center, said centerextending rearwardly through said barrel, said solid center beingsecured to said rear shaft `so as to axially and rotatively restrainsaid rear shaft with respect to said tumbler retainer,

a key for said lock, said lock housing having a bore therein, saidtumbler retainer being positioned within said bore, an annular grooveextending ouwtardly from said bore, at least one lug slot extending fromsaid annular groove to the face of said housing, said key having alocking lug thereon, said locking lug being insertable into said slot insaid tumbler retainer so that key can be inserted into said tumblerretainer in only one relatively rotative position of said key withrespect to said tumbler retainer,

a locking ring extending inwardly within said lock housing, said lockingring having a lug slot therein, a lug secured to said tumbler retainer,said lug being positioned behind said locking ring to retain said barrelwithin said housing, said lug being alignable with said lug slot topermit withdrawal of said barrel from said housing, a key finger slot insaid tumbler retainer and a slot in said housing, said lug on saidtumbler retainer being aligned with said lug slot in said locking ringwhen said slots on said tumbler retainer and said housing are aligned.

3. An axial tumbler lock which includes:

a housing having a `bore located therein and a front surface,

a barrel rotatably mounted within said bore and extending to said frontsurface so as to have a front surface,

said barrel including a tumbler retainer adjacent the front surface ofsaid housing,

a plurality of tumbler yslots located within said tumbler retainer so asto be spaced from the front surface of said barrel,

a tumbler pin slot extending from each of said tumbler slots so as toybe open to the front surface of said barrel,

a stop means located on said tumbler retainer,

a tumbler located in each of said tumbler slots,

each of said tumblers having4 a pin extending therefrom through thecorresponding tumbler pin slot,

spring means located within said housing for urging each of saidtumblers into contact with said stop means in a position in which saidtumbler pins extend to the front surface in said barrel,

said tumblers being capable `of being moved away from the front surfaceof said barrel when engaged by a key, lock ring means located in saidhousing and having axial slots therein extending towards the interior ofsaid bore,

retaining lug means on said tumbler retainer fitting behind said lockring means and being capable of being moved through one of said slots ina position of said barrel, said tumblers each including notch meanscapable of being located with respect to said lock ring means uponmovement of said tumblers to an unlocked position so as to permitrotation of said barrel, said tumblers normally being in a lockedposition in which each of said tumblers extends through one of saidaxial slots in said lock ring means so as to prohibit rotation of saidbarrel, engageable means located on the front surface of said barrelpermitting a key to be engaged with said barrel in only one positionwith respect to said barrel and permitting said barrel to be rotatedbecause of the engagement with said key upon rotation of said key, anannular groove extending from said bore adjacent the front surface ofsaid housing, and at least one lug slot extending from said annulargroove to said front surface of said housing wherein a portion of thekey can be inserted and withdrawn from said annular groove only throughsaid lug slot. 4. An axial tumbler lock as claimed in claim 3 including:

a plurality of lug slots leading from said annular groove to the frontof said housing, a key, said key having a plurality of keying fingers,each of said keying fingers being capable of engaging one of saidtumbler pins when key is inserted within said lock so that each tumblerpin is moved so that the notch means in the tumbler associated therewithis located opposite said lock ring means, permitting said barrel to berotated within said housing, said key portion comprising a locking lug,said locking lug being capable of fitting within said lug slots andengaging the interior of said annular groove during rotation of saidkey, said key also having means engaging said engageable means, saidlocking lug being capable of being withdrawn from the interior of saidannular groove through one of said lug slots only when said barrel hasbeen rotated to a position in which said locking lug is capable of beingmoved through said one of said lug slots. 5. An axial tumbler lock asclaimed in claim 3 where- 1n:

said `barrel comprises said tumbler retainer, a rear shaft member and acenter means connecting said retainer and said rear shaft means, saidcenter means comprising a headed pin, engaging said tumbler retainer, aconnecting member extending from said pin and means connecting saidconnecting member to said shaft so that as said barrel is rotated saidshaft is rotated. 6. An axial tumbler lock as claimed in claim 5wheresaid center means is a blade,

said rear shaft means has a slot formed therein and said blade fitswithin said slot, said means for connecting comprises a pin extendingthrough said rear shaft means and said blade.

(References on following page) 10 References Cited 2,024,030 12/ 1935Deutsch 70--363 X 2,325,310 7/1943 Deutsch 70-369 X UNITED STATESPATENTS 2,557,028 6/1951 Deutsch 70-369 x 1,375,521 4/1921 Lasky 70-363X 3,163,034 12/1964 George 70-363 X 1,384,392 7/1921 Lasky 70-363 53,237,436 3/ 1966 Williams 70-363 1,401,044 12/1921 Clark 70-3631,619,252 3 /1927 George 70 363 MARVIN A. CHAMPION, Primary Examlne.1,984,202 12/1934 Shinn 70-363 X P. TEITELBAUM, Assistant Examiner.

